""ET POLICY Telegram API Certificate Observed""
SID: 2029322
Revision: 2
Class Type: misc-activity
Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_01_27, deployment Perimeter, signature_severity Informational, updated_at 2020_01_27
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: 443
Destination Network: $HOME_NET
Destination Port: any
Flow: established,to_client
Contents:
-
Value: "|55 04 03|"
-
Value: "|10|api.telegram.org"
Within: 17
PCRE:
Special Options:
- fast_pattern